Algebrahard · Past Paper
What is the HCF of a^3b - ab^3 and a^2b - ab^2?
Aab(a-b)
Bab(a+b)
Cab
Da-b
✓ Correct Answer: A — ab(a-b)
a^3b-ab^3 = ab(a^2-b^2) = ab(a-b)(a+b). a^2b-ab^2 = ab(a-b). HCF is ab(a-b).
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